#!/usr/bin/python
#Filename: dict.py
#The dict can be changed
#help(dict)

ab = {  'Swaroop'   : 'swaroopch@bytefopython.info',
		'Larry'     : 'larry@wall.org',
		'Matsumoto' : 'matz@ruby-lang.org',
		'Spammer'   : 'spammer@hotmail.com'
     }

print "Swaroop's address is %s" % ab['Swaroop']

#Adding a key/value pair
ab['Guido'] = 'guido@python.org'

#Deleting a key/value pair
del ab['Spammer']

print '\nThere are %d contacts in the address-book\n' % len(ab)
for name, address in ab.items(): #or ab.has_key('Guido')
	print 'Contact %s at %s' % (name, address)

if 'Guido' in ab:
	print "\nGuido's address is %s" % ab['Guido']

